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...while others took part in an impromptu yoga session

The 78-year-old, who established the festival on his dairy farm in 1970, is now a celebrity in his own right - constantly asked to shake hands and pose for photographs as he inspects the site.

"Do you see that man with the beard?" one mother told her son as Eavis walked past. "He owns the whole field."

Surprise guests

Arcade Fire take to the stage at 22:00 BST, and their performance will be shown on BBC Two an hour later.

Ahead of the show, guitarist Richard Reed-Parry said the band "may have Somerset artists" on stage with them.

His comment, in the NME, left message boards and music magazines mystified.

The annals of rock history do not list Somerset as a source of tremendous inspiration - leaving Arcade Fire to choose from the likes of Kula Shaker, Reef and, perhaps most excitingly of all, The Wurzels.